Your array (list) functions work fine, but you are missing a key
concept of object oriented programming. The key is that objects are
all about data and code working together. Your "Array Parent" has a
fine set of handlers, but that's all it is, a set of handlers. Given
what you have shown, there is no reason to create an object since
these handlers operate only on the data passed it. They don't share
any data.
If you really want to do this in an OOP way, you want to have the
object maintain and operate on the data. For example, when you want
to be able to manipulate items in an array (or a one dimensional
list), you could do this:
-- Whereever you want to create your array:
global array
myList = [1,2,"a",6,"g"]
array = new(script "Array Parent", myList)
And the object would look like this:
property pMyList -- property which is my list
on new me, startingList
pMyList = startingList
return me
end
on _shift me
myValue = pMyList[1]
deleteAt(pMyList, 1)
return myValue
end
on _unshift me, myValue
addAt(pMyList, 1)
end
on _push me, myValue
append(pMyList, myValue
end
etc.
This also allows you to have multiple arrays:
global array1
global array2
array1 = new(script "Array parent", [1,2,3,4,5])
array2 = new(script "Array parent", ["A", "B", "C", "D", "E", "F"]
Again, the idea here is that the data is kept _inside_ the object -
or another way to say this is that the object "owns" the data. You
could certainly add two more "accessor" routines to get and set the
data for the array:
on setList newList
pMyList = newList
end
on getList
return pMyList
end
For more about this, feel free to check out my EBook on OOP in Lingo at:
http://www.furrypants.com/loope
Especially in chapter 5 where I talk about using objects to model a
two dimensional array.
Irv
At 11:59 PM -0400 4/30/01, b_douglas wrote:
>Hey all,
>
>I needed an easier way to deal with lists so I made these functions
>so far it only deals with linear lists but I am working on propertyLists
>
>so in your movie script:
>on prepareMovie
> global array
> array = new (script"Array Parent")
>end
>
>
>
>Then in your movie you can use it as such:
>
>myList = [1,2,"a",6,"g"]
>temp = array._shift(myList)
>array._push(myList,temp)
>
>put myList
> [2,"a",6,"g",1]
>
>
>
>
>Array Parent --script's name (parent script)
>-------------------------------------------------
>on new me
> return me
>end
>
>on _shift me, tempList --variable = array._shift(list)
> myValue = templist[1]
> deleteAt(tempList,1)
> return myValue
>end
>
<snip>
--
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